Quantum Mechanics as a Forced Structural Consequence of Event Density Primitives

This paper argues that the formal structure of non‑relativistic quantum mechanics is not a collection of independent postulates, but the forced consequence of a deeper and simpler framework based on Event Density primitives. Beginning from assumptions about events, participation, bandwidth allocation, and local commitment dynamics, I show that the familiar elements of quantum theory — complex states, linear evolution, the probability rule, non‑classical correlations, and the uncertainty principle — all emerge without additional physical postulates. The key object is the participation measure, which unifies amplitude and phase into a single structural quantity. In the thin‑participation limit, this measure evolves according to the Schrödinger form; environmental interactions force the probability rule; shared participation produces Bell‑violating correlations; and a structural bandwidth partition yields the uncertainty relations. The only non‑derived elements are the numerical values of dimensional constants such as Planck’s constant and particle masses. The result is a unified structural explanation of why quantum mechanics has the form it does, reducing its traditional axioms to consequences of a single primitive framework.